twice a number means a number times 2
Let the number be x Twice a number means 2x 7 less than twice a number means 2x-7
Twice the number n is 2n.
Twice a number minus two giving us the answer as eight is number 5.
If the number is n, then twice the number is 2n and the sum of the two is n + 2n = 3n.
-7754
The number is -6.
3.45
2X - 4 = -10 2X = -6 X = -3
2N-13
If the number, x, has 10 subtracted from twice it to make 28, then x must be 19. 2x - 10 = 28 2x = 38 x = 19
3-2x=7 so -2x=4 and x=-2
1 - 2n
Let the number be x: So: 2x-4 = x-10 => 2x-x = 4-10 => x = -6
Watch closely ==> [ 1 - 2x ] .
12-8 = 4 and 2*4 = 8
is equal to -23 -2*x